Each individual User Profile sizes __ MB (Sometimes the median and biggest size can be enough).

2. Make sure that you don’t have the following registry key set: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\RegistrySizeLimit
3. If you don’t have the registry key set, install the latest UPHClean (2.0) in http://blogs.technet.com/uphclean/, set the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UPHClean\Parameters\SHARING_VIOLATION_REMAP (dword) 1 (hex), then stop and restart the UPHClean Service